1994 Northridge quake simulation
40 seconds of an aftershock from the Jan 17, 1994 Northridge quake in San Fernando Valley of Southern California.
Model:
- 50 x 50 x 10 km region of San Fernando Valley.
- unstructured mesh with 13,422,563 nodes, 76,778,630 linear tetrahedral elements, 1 Hz frequency resolution, 20 meter spatial resolution.
Simulation
- 0.0024s timestep
- 16,666 timesteps (45M x 45M SMVP each timestep).
- ~15-20 GBytes of DRAM.
- 6.5 hours on 256 PEs of Cray T3D (150 MHz 21064 Alphas, 64 MB/PE).
- Comp: 16,679s (71%) Comm: 575s (2%) I/O: 5995s(25%)
- 80 trillion (10^12) flops (sustained 3.5 GFLOPS).
- 800 GB/575s (burst rate of 1.4 GB/s).